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How do I stop a program from opening in firefox even though not default browser

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My work laptop uses windows 7 and contains programs which can only run in IE. I downloaded firefox as I like to use it to browse and for a specific add on programme I use when writing scientific papers. IE is set as default browser. Now one of my work programs tries to open in firefox every time. It doesnt work when opening in firefox. How can I stop t from doing this?

My work laptop uses windows 7 and contains programs which can only run in IE. I downloaded firefox as I like to use it to browse and for a specific add on programme I use when writing scientific papers. IE is set as default browser. Now one of my work programs tries to open in firefox every time. It doesnt work when opening in firefox. How can I stop t from doing this?

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Hi,

Please check your computer if you are infected with malware or virus. Read this article for more information Troubleshoot Firefox issues caused by malware

Please let me know if this helps.

Thanks!

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Could you explain in more detail the sequence of events you're following. In particular, how are you starting the work program that needs to run in IE?